$20,000? It would surely reach that price again in my opinion. It's just a matter of when.

As much as I don't want a economic crisis to happen, I think an economic crisis is what would bring the prices up significantly. Especially for 3rd world countries, chances are, people would be looking for a sort of 'hedge' against their local fiat money(pretty much like what happened to Venezuela); and I think gold and silver would be quite unlikely to be their choices. While precious metals are more stable in price, they're really isn't easy to transact with. Not to mention they could be faked.

P.S. Take my opinion lightly. Not an economic expert or anything. I definitely could be wrong.